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Texas Tech University |
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Key Facts about Avian Influenza (Bird Flu) and Avian Influenza A (H5N1) Virus |
A very good article was posted in the Daily
Toreador where Dr. Ron Warner, epidemiologist at the Texas Tech University
Health Science Center, was quoted as saying that the likelihood of avian flu
becoming a legitimate concern in Lubbock is more media hype than imminent
threat. He went on to say that people should be more cautious with food
preparation. Chicken, turkey and duck should be cooked properly and thoroughly
to avoid contracting any food-borne illness.
To help you sort out the media hype, EH&S has compiled a list of the most common
questions that have been presented to the Center of Disease Control (CDC) and the World
Health Organization (WHO).
Should you have any additional questions or concerns the links to these
organizations are posted for your convenience.
Also for your assistance, a
pandemic flu planning checklist for individuals and
families is posted to help you gather the information and resources you may
need in case of a flu pandemic.
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What is Bird Flu and It's symptoms
How Bird Flu is Treated
Additional information and links |
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What is Avian Influenza (bird flu)? |
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Bird flu is an infection caused by avian (bird) influenza (flu) viruses. These
flu viruses occur naturally among birds. Wild birds worldwide carry the viruses
in their intestines, but usually do not get sick from them. However, bird flu is
very contagious among birds and can make some domesticated birds, including
chickens, ducks, and turkeys, very sick and kill them.
Do bird flu viruses infect humans?
Bird flu viruses do not usually infect humans, but several cases of human
infection with bird flu viruses have occurred since 1997.
What are the symptoms of bird flu in humans?
Symptoms of bird flu in humans have ranged from typical flu-like symptoms
(fever, cough, sore throat and muscle aches (to eye infections, pneumonia,
severe respiratory diseases (such as acute respiratory distress), and other
severe and life-threatening complications. The symptoms of bird flu may depend
on which virus caused the infection.
How does bird flu spread?
Infected birds shed flu virus in their saliva, nasal secretions, and feces.
Susceptible birds become infected when they have contact with contaminated
excretions or surfaces that are contaminated with excretions. It is believed
that most cases of bird flu infection in humans have resulted from contact with
infected poultry or contaminated surfaces.
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How is bird flu in humans treated? |
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Studies suggest that the prescription medicines approved for human flu viruses
would work in preventing bird flu infection in humans. However, flu viruses can
become resistant to these drugs, so these medications may not always work.
What is the risk to humans from bird flu?
The risk from bird flu is generally low to most people because the viruses
occur mainly among birds and do not usually infect humans. However, during an
outbreak of bird flu among poultry (domesticated chicken, duck, turkeys), there
is a possible risk to people who have contact with infected birds or surfaces
that have been contaminated with excretions from infected birds. The current
outbreak of avian influenza A (H5N1) among poultry in Asia is an example of a
bird flu outbreak that has caused human infections and deaths. In such
situations, people should avoid contact with infected birds or contaminated
surfaces, and should be careful when handling and cooking poultry. For more
information about avian influenza and food safety issues, visit the World Health
Organization website.
What is the risk to people in the United States from the H5N1 bird flu
outbreak in Asia?
The current risk to Americans from the H5N1 bird flu outbreak in Asia is
low. The strain of H5N1 virus found in Asia has not been found in the United
States. There have been no human cases of H5N1 flu in the United States. It is
possible that travelers returning from affected countries in Asia could be
infected. Since February 2004, medical and public health personnel have been
watching closely to find any such cases.
What does CDC recommend regarding the H5N1 bird flu outbreak in Asia?
In February 2004, CDC provided the U.S. health department with
recommendations for enhanced surveillance (“detection”) in the U.S. of avian
influenza A (H5N1). Follow-up messages (Health Alert Network) were sent to the
health departments on August 12, 2004 and February 4, 2005, both reminding
health departments about how to detect (domestic surveillance), diagnose, and
prevent the spread of avian influenza A (H5N1). It also recommended measures for
laboratory testing for H5N1 virus. CDC currently advises that travelers to
countries in Asia with known outbreaks of influenza A (H5N1) avoid poultry
farms, contact with animals in live food markets, and any surfaces that appear
to be contaminated with feces from poultry or other animals.
Currently the CDC is taking part in a number of pandemic prevention and
preparedness activities, including:
Working
with the Association of Public Health Laboratories on training workshops for
state laboratories on the use of special laboratory (molecular) techniques
to identify H5 viruses.
Working
with the Council of State and Territorial Epidemiologists and others to help
states with their pandemic planning efforts.
Working
with the World Health Organization (WHO) and Vietnamese Ministry of Health to
investigate influenza H5N1 in Vietnam and to provide help in laboratory
diagnostics and training to local authorities.
Perform
laboratory testing of H5N1 viruses.
Starting
a $5.5 million initiative to improve influenza surveillance in Asia.
Holding
or taking part in training sessions to improve local capacities to conduct
surveillance for possible human cases of H5N1 and to detect influenza A H5
viruses by using laboratory techniques.
Working
together with WHO and the National Institutes of Health (NIH) on safety testing
of vaccine seed candidates and to develop additional vaccine virus seed
candidates for influenza A (H5N1) and other subtypes of influenza A virus.
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Center For Disease Control
World Health Organization
Planning
and Response for Pandemic Flu |
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